RFID application system learning

1. RFID system implementation:This is a very difficult task. Therefore, enterprise manufacturers who intend to use the system should adopt a local test first, and then gradually obtain experience from the system to implement the strategy on a scale, there is no competition for RFID applications.
2. The ID application system includes:Goals and step-by-step plans, frequency band determination, read/write devices, selection and customization of electronic tags, business process design, middleware, and application software.
3. Tag types and features

1) low frequency (125 k, 134.2 K): Advantages: Strong penetration, low price, less affected by the environment (including water and metal), disadvantages: low communication rate, less functionality, generally, there is no anti-collision function, and the distance is short. (TI's 134.2k Low Frequency System can reach a maximum distance of 2 meters)
Applications: Access Control, animal identification, conference management, parking lots, etc.
Form: From tiny glass tubes to key chains to big cards, there are all kinds of closed forms.

2) High Frequency (13.56 m): advantage: fast communication rate, collision prevention, distance up to 1 m; disadvantage: Affected by metal. In general, it is between the low frequency and the super high frequency.
Applications: Access Control, postal service, payment, anti-DDoS, logistics, asset management, package identification, industrial automation product identification, food
There are also a variety of forms, but they are thinner than low-frequency systems, such as paper.

3) ultra-high frequency (860-960 m): Advantages: long distance, fast, collision, and orientation. Disadvantages: Water and metal impacts greatly.
Applications: Retail, anti-counterfeit, logistics, asset management, package identification, industrial automation product identification, military, medical,
Form: Generally, the label type is mostly used, and the size is small.

4) microwave (2.45g, 5.8g): commonly used as an active System for Vehicle High-Speed Identification
Application: Hitachi's U chip is also 2.45g, which can be used for defense, ticketing, etc. The active system is used for Vehicle Identification and container identification.

5) dual-band system: it is divided into active dual-band and passive dual-band systems. This type of system is compatible with the advantages of low frequency and high frequency. It integrates the advantages of high penetration, long distance and fast speed and is applied to high-end applications. Typical vendors include Savi, tagmaster, ipico, And the century tide in China.
Application: because the price is expensive and the size is large, it is generally used in scenarios with poor environments and high performance requirements. If personal safety is required, it will protect valuable assets.

4. When selecting a system, you should also consider the impact distance.
1) the positioning accuracy of tags. For example, in the case of jewelry identification, the accuracy requirement is very high.
2) The maximum movement speed of tags. Generally, the faster the moving speed of the object to be identified, the higher the RFID frequency to be selected.

5. Security Requirements
1) when designing an RFID system, we must consider the security requirements. If someone intentionally changes or damages data, what kind of economic losses will it cause? How should we choose an RFID system with the proper encryption performance.
2) low security requirements for industrial or closed application projects.
3) high project security requirements related to assets or amounts.

6. Anti-collision of tags: the maximum number of tags that may be in the recognition area at the same time